Exhibit 3.1

AMENDMENT TO THE AMENDED AND RESTATED BY-LAWS

OF

MUSCLEPHARM CORPORATION

The Amended and Restated By-Laws (the “Bylaws”) of MUSCLEPHARM CORPORATION, a Nevada corporation (the “Corporation”), as certified by the secretary of the Corporation on May 8, 2015, are hereby amended as follows:

Section 3 to Article II of the Bylaws is amended and restated as follows:

“Section 3. Special Meetings.

Unless otherwise prescribed by law or by the Articles of Incorporation, Special Meetings of Stockholders, for any purpose or purposes, may be called by either (i) the Chairman, if there be one, or (ii) the President, (iii) any Vice President, if there be one, (iv) the Secretary, or (v) any Assistant Secretary, if there be one, and shall be called by any such officer at the request in writing of a majority of the Board of Directors or at the request in writing of stockholders owning a majority of the capital stock of the Corporation issued and outstanding and entitled to vote (the “Requisite Percentage”). Written notice of a Special Meeting stating the place, date and hour of the meeting and the purpose or purposes for which the meeting is called shall be given not less than ten nor more than sixty days before the date of the meeting to each stockholder entitled to vote at such meeting.

A stockholder request for a Special Meeting (a “Special Meeting Request”) shall be directed to the Secretary of the Corporation and shall be signed by each stockholder, or a duly authorized agent of such stockholder, requesting the Special Meeting (each, a “Requesting Stockholder”) and shall be accompanied by a notice setting forth (1) the information required by Section 9 of this Article II as to any nominations proposed to be made or any other business proposed to be conducted at such Special Meeting and as to such Requesting Stockholders (including the completed written questionnaires and written representations and agreements required by Section 9 of this Article II from any nominee for election as a director of the Corporation, as applicable); (2) a statement of the specific purpose or purposes of the Special Meeting; (3) an acknowledgement by the Requesting Stockholders and the beneficial owner (as defined in Rule l3d-3 under the Securities Exchange Act of 1934, as amended (or any successor thereto) (the “Act”)) (the “Beneficial Owner”), if any, on whose behalf the Special Meeting Request(s) are being made that a disposition of shares of the Corporation’s capital stock owned of record or beneficially as of the date on which the Special Meeting Request(s) in respect of such shares is delivered to the Secretary that is made at any time prior to the Special Meeting shall constitute a revocation of such Special Meeting Request(s) with respect to such disposed shares; and (4) documentary evidence that the Requesting Stockholder(s) own the Requisite Percentage of as of the date of such Special Meeting Request.

In determining whether a Special Meeting of Stockholders has been requested by the record holders of shares representing in the aggregate at least the Requisite Percentage, multiple Special Meeting Requests will be considered together only if (i) each Special Meeting Request identifies substantially the same purpose or purposes of the Special Meeting and substantially the same matters proposed to be acted on at the Special Meeting (in each case as determined in good faith by the Board of Directors) and (ii) such Special Meeting Requests have been dated and delivered to the Secretary within thirty (30) days of the earliest dated Special Meeting Request.  A stockholder may revoke a Special Meeting Request at any time by written revocation delivered to the Secretary, and if, following any revocation (including any deemed revocation pursuant to clause (3) of the foregoing paragraph), the un-revoked Special Meeting Requests are from stockholders holding in the aggregate less than the Requisite Percentage, the Board of Directors, in its sole discretion, may cancel the Special Meeting.”

Section 6 to Article II of the Bylaws is amended and restated as follows:

“Section 6. Consent of Stockholders in Lieu of Meeting.  

Unless otherwise provided in the Articles of Incorporation, any action required or permitted to be taken at any Annual or Special Meeting of Stockholders of the Corporation, may be taken without a meeting, without prior notice and without a vote, if a consent in writing, setting forth the action so taken, shall be signed by the holders of outstanding stock having not less than the minimum number of votes that would be necessary to authorize or take such action at a meeting at which all shares entitled to vote thereon were present and voted. Every written consent purporting to take or authorize the taking of corporate action must bear the date of signature of each stockholder who signs the written consent, and no written consent shall be effective to take the corporate action referred to therein unless, within sixty (60) days of the earliest dated written consent delivered in the manner required by this Section 6, written consent signed by a sufficient number of stockholders to take such action are so delivered to the Corporation. The written consents shall be delivered to the Corporation by delivery to its registered office in Nevada, its principal place of business, or an officer or agent of the Corporation having custody of the book in which the proceedings are recorded. Delivery to the registered officer shall be by hand or

certified or registered mail, return receipt requested. Prompt notice of the taking of the corporate action without a meeting by less than unanimous written consent shall be given to those stockholders who have not consented in writing.

The record date for the determination of stockholders entitled to express consent to corporate action in writing without a meeting shall be as fixed by the Board of Directors or as otherwise established under this Section 6. Any person seeking to have the stockholders authorize or take corporate action by written consent without a meeting shall, by written notice addressed to the Secretary of the Corporation and delivered to the Corporation and signed by a stockholder of record, request that a record date be fixed for such purpose. The written notice must contain the following information with respect to each action that the stockholder proposes to take by consent: (a) the information required by Section 9 of Article II of these Bylaws as though such stockholder was intending to make a nomination or to bring any other matter before a meeting of stockholders, and (b) to the extent not otherwise required by Section 9 of Article II of these Bylaws, such notice must also state, (i) the text of the proposal (including the text of any resolutions to be effected by consent and the language of any proposed amendment to the Bylaws of the Corporation), (ii) the reasons for soliciting consents for the proposal, (iii) any material interest in the proposal held by the stockholder and the Beneficial Owner(s), if any, on whose behalf the action is to be taken, and (iv) any other information relating to the stockholder, the Beneficial Owner(s), any person whom the stockholder proposes to nominate for election or appointment as a director of the Corporation pursuant to such solicitation of written consents or the proposal of other business by the stockholder, as applicable, that would be required to be disclosed in filings in connection with the solicitation of proxies or consents pursuant to Section 14 of the Act and the rules and regulations promulgated thereunder (or any successor provision of the Act or the rules or regulations promulgated thereunder). Following receipt of the notice, the Board of Directors shall have ten (10) calendar days to determine the validity of the request, and if appropriate, adopt a resolution fixing the record date for such purpose. The record date for such purpose shall be no more than ten (10) calendar days after the date upon which the resolution fixing the record date is adopted by the Board of Directors and shall not precede the date such resolution is adopted. If the Board of Directors fails within ten (10) calendar days after the Corporation receives such notice to fix a record date for such purpose, provided that the request is valid and fixing a record date is appropriate, the record date shall be the day on which the first written consent is delivered to the Corporation in the manner described in the first paragraph of this Section 6; except that, if prior action by the Board of Directors is required by applicable law, the record date shall be at the close of business on the day on which the Board of Directors adopts the resolution taking such prior action.  

Nothing contained in this Section 6 shall in any way be construed to suggest or imply that the Board of Directors or any stockholder shall not be entitled to contest the validity of any consent or related revocations, whether before or after such certification by the inspectors or to take any other action (including, without limitation, the commencement, prosecution, or defense of any litigation with respect thereto, and the seeking of injunctive relief in such litigation).”

A new Section 9 to Article II is added to the Bylaws as follows:

“Section 9. Advance Notice of Stockholder Proposals and Stockholder Nominations.

Nominations of persons for election to the Board of Directors of the Corporation and the proposal of business to be considered by the stockholders may be made at any meeting of stockholders only (a) pursuant to the Corporation’s notice of meeting, (b) by or at the direction of the Board of Directors, or (c) by any stockholder of the Corporation who was a stockholder of record at the time of giving of notice provided for in these Bylaws and continues to be a stockholder of record at the time of such meeting, who is entitled to vote at the meeting and who complies with the notice procedures set forth in this Section 9.

To be timely, a stockholder’s notice shall be delivered to the Secretary at the principal executive offices of the Corporation not later than the close of business on the 90th day nor earlier than the close of business on the 120th day prior to the first anniversary of the preceding year’s annual meeting; provided, however, that in the event that the date of the annual meeting is advanced by more than 30 days or delayed by more than 70 days from such anniversary date or if the Corporation has not previously held an annual meeting, notice by the stockholder to be timely must be so delivered not earlier than the close of business on the 120th day prior to such annual meeting and not later than the close of business on the later of the 90th day prior to such annual meeting or the tenth day following the day on which public announcement of the date of such meeting is first made by the Corporation. In no event shall the public announcement of a postponement or adjournment of an annual meeting to a later date or time commence a new time period for the giving of a stockholder’s notice as described above. For purposes of these Bylaws, “public announcement” shall mean disclosure in a press release reported by a national news service or in a document publicly filed by the Corporation with the Securities and Exchange Commission pursuant to Section 13, 14 or 15(d) of the Act and the rules and regulations promulgated thereunder.

Such stockholder’s notice shall set forth (I) as to the stockholder giving the notice and the Beneficial Owner, if any, on whose behalf the nomination or proposal is made (each, a “Stockholder Associated Person”) (a) the name and address of such stockholder, as they appear on the Corporation’s books, and of each other Stockholder Associated Person; (b) (1) the class and number of shares of the Corporation which are owned beneficially and of record by such Stockholder Associated Person; (2) any option, warrant, convertible security, stock appreciation right, or similar right with an exercise or conversion privilege or a settlement payment or mechanism at a price related to any class or series of shares of the Corporation or with a value derived in whole or in part from the value of any class

or series of shares of the Corporation, or any derivative or synthetic arrangement having the characteristics of a long position in any class or series of shares of the Corporation, or any contract, derivative, swap or other transaction or series of transactions designed to produce economic benefits and risks that correspond substantially to the ownership of any class or series of shares of the Corporation, including due to the fact that the value of such contract, derivative, swap or other transaction or series of transactions is determined by reference to the price, value or volatility of any class or series of shares of the Corporation, whether or not such instrument, contract or right shall be subject to settlement in the underlying class or series of shares of the Corporation, through the delivery of cash or other property, or otherwise, and without regard of whether any Stockholder Associated Person may have entered into transactions that hedge or mitigate the economic effect of such instrument, contract or right or any other direct or indirect opportunity to profit or share in any profit derived from any increase or decrease in the value of shares of the Corporation (any of the foregoing, a “Derivative Instrument”) directly or indirectly owned beneficially by such Stockholder Associated Person, (3) any proxy, contract, arrangement, understanding, or relationship pursuant to which any Stockholder Associated Person has a right to vote any class or series of shares of the Corporation, (4) any agreement, arrangement, understanding, relationship or otherwise, including any repurchase or similar so-called “stock borrowing” agreement or arrangement, engaged in, directly or indirectly, by any Stockholder Associated Person, the purpose or effect of which is to mitigate loss to, reduce the economic risk (of ownership or otherwise) of any class or series of the shares of the Corporation by, manage the risk of share price changes for, or increase or decrease the voting power of, such stockholder with respect to any class or series of the shares of the Corporation, or which provides, directly or indirectly, the opportunity to profit or share in any profit derived from any decrease in the price or value of any class or series of the shares of the Corporation (any of the foregoing, “Short Interests”), (5) any rights to dividends on the shares of the Corporation owned beneficially by any Stockholder Associated Person that are separated or separable from the underlying shares of the Corporation, (6) any proportionate interest in shares of the Corporation or Derivative Instruments held, directly or indirectly, by a general or limited partnership in which any Stockholder Associated Person is a general partner or, directly or indirectly, beneficially owns an interest in a general partner of such general or limited partnership, (7) any performance-related fees (other than an asset-based fee) that any Stockholder Associated Person is entitled to based on any increase or decrease in the value of shares of the Corporation or Derivative Instruments, if any, including without limitation any such interests held by members of such Stockholder Associated Person’s immediate family sharing the same household, (8) any significant equity interests or any Derivative Instruments or Short Interests in any principal competitor of the Corporation held by any Stockholder Associated Person, and (9) any direct or indirect interest of any Stockholder Associated Person in any contract with the Corporation, any affiliate of the Corporation or any principal competitor of the Corporation (including, in any such case, any employment agreement, collective bargaining agreement or consulting agreement); (d) any other information relating to any Stockholder Associated Person that would be required to be disclosed in a proxy statement and form of proxy or other filings required to be made in connection with solicitations of proxies for, as applicable, the proposal and/or for the election of directors in a contested election pursuant to Section 14 of the Act and the rules and regulations promulgated thereunder; and (e) a representation that the stockholder is a holder of record of stock of the Corporation entitled to vote at such meeting and intends to appear in person or by proxy at the meeting and nominate the person or persons specified in the notice; (II) as to each person whom the stockholder proposes to nominate for election or reelection as a director (a) all information relating to such person that would be required to be disclosed in a proxy statement or other filings required to be made in connection with solicitations of proxies for election of directors in a contested election pursuant to Section 14 of the Act and the rules and regulations promulgated thereunder (including such person’s written consent to being named in the proxy statement as a nominee and to serving as a director if elected), (b) the name and address of the person or persons to be nominated, (c) a description of all arrangements or understandings between the stockholder and each nominee and any other person or persons (naming such person or persons) pursuant to which the nomination or nominations are to be made by the stockholder; (e) a description of all direct and indirect compensation and other material monetary agreements, arrangements and understandings during the past three years, and any other material relationships, between or among any Stockholder Associated Person, on the one hand, and each proposed nominee, and his or her respective affiliates and associates, or others acting in concert therewith, on the other hand, including, without limitation all information that would be required to be disclosed pursuant to Rule 404 promulgated under Regulation S-K if such Stockholder Associated Person were the “registrant” for purposes of such rule and the nominee were a director or executive officer of such registrant; and (f) a written questionnaire with respect to the background and qualification of such person and the background of any other person or entity on whose behalf the nomination is being made (which questionnaire shall be provided by the Secretary upon written request), and a written representation and agreement (in the form provided by the Secretary upon written request) that such person (1) is not and will not become a party to (A) any agreement, arrangement or understanding with, and has not given any commitment or assurance to, any person or entity as to how such person, if elected as a director of the Corporation, will act or vote on any issue or question (a “Voting Commitment”) that has not been disclosed to the Corporation or (B) any Voting Commitment that could limit or interfere with such person’s ability to comply, if elected as a director of the Corporation, with such person’s fiduciary duties under applicable law, (C) agrees to comply with all policies of the Corporation as in effect from time to time and (D) is not and will not become a party to any agreement, arrangement or understanding with any person or entity other than the Corporation with respect to any direct or indirect compensation, reimbursement or indemnification in connection with service or action as a director that has not been disclosed therein; and (III) as to any other business that the stockholder proposes to bring before the meeting, a brief description of the business desired to be brought before the meeting, the reasons for conducting such business at the meeting and any material interest in such business of any Stockholder Associated Person. In addition, the stockholder making such proposal shall promptly provide any other information reasonably requested by the Corporation. Notwithstanding anything in these Bylaws to the contrary, no business shall be conducted at any meeting of the stockholders except in accordance with the procedures set forth in this Section 9. The Chairman of any such meeting shall direct that any nomination or business not properly brought before the meeting shall not be considered.”

Section 2 to Article III of the Bylaws is amended and restated as follows:

“Section 2. Vacancies.  Vacancies and newly created directorships resulting from any increase in the authorized number of directors shall be filled solely by a majority of the directors then in office, though less than a quorum, or by a sole remaining director, and the directors so chosen shall hold office until the next annual election and until their successors are duly elected and qualified, or until their earlier resignation or removal.”

Section 11 to Article III of the Bylaws is amended and restated as follows:

“Section 11. Removal of Directors. Except as may otherwise be provided by Nevada Law, any director or the entire Board of Directors may be removed, with or without cause, by the vote of stockholders representing not less than two-thirds of the voting power of the issued and outstanding stock entitled to vote.”

A new Section 5 to Article VII is added to the Bylaws as follows:

“Section 5.  Forum Selection. Unless the Corporation consents in writing to the selection of an alternative forum, a state or federal court located within the State of New York shall be the sole and exclusive forum for (i) any derivative action or proceeding brought on behalf of the Corporation, (ii) any action asserting a claim for breach of a fiduciary duty owed by any director, officer or other employee of the Corporation to the Corporation or the Corporation’s stockholders, (iii) any actions asserting a claim arising pursuant to any provision of the Nevada Revised Statutes, the Articles of Incorporation or these Bylaws, in each case as amended, or (iv) any action asserting a claim governed by the internal affairs doctrine, in each such case subject to such court having personal jurisdiction over the indispensable parties named as defendants therein. Any person or entity purchasing or otherwise acquiring any interest in shares of capital stock of the Corporation shall be deemed to have notice of and consented to the provisions of this Section 5.”

CERTIFICATION

I hereby certify that I am the duly appointed and acting Secretary of MUSCLEPHARM CORPORATION and that the foregoing amendment to the Amended and Restated By-Laws of MUSCLEPHARM CORPORATION was duly adopted and approved by unanimous written consent of the Board of Directors held on the date set forth above.